A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5996-01-642-7593
NSN 5960-01-259-3846
NSN 6650-01-459-8703
NSN 5920-01-447-8643
NSN 5998-01-634-0604
NSN 5998-01-038-1067
NSN 5835-01-558-9444
NSN 5945-01-027-5055
NSN 5990-00-113-2653
NSN 6240-00-612-0883
NSN 2925-01-359-4027
NSN 6150-00-925-2465